Plate-glass surfacing car



19 June 7 27 A, L. HARRINGTON PLATE GLASS SURACING CAR Filed Jan. 22, 1924 5 Sheets-Shpet l June 1927'.`

7 A. l.. HARRINGTON PLATE GLASS sURFAcING CAR Filed Jan. 22, 1924 3 Sheets-Sheet 2 A. L. HARRINGTON PLATE GLASS SURFACING CAR June 7', 1927. 1,631,126

Filed Jan. 22. 1924 3 Sheets-Sheet 3 Patented June 7, 1927.

\ U-Nirsn STATES 1,631,126 PATENT OFFICE.

` lL. i HARRINGTGN, OF ROSSLYN FAR-MS, PENNSYLVANIA, ASSIGNGR TO yIEIJI'JSBURGH PLATE GLASS COMPANY, A CORPORATION' OF PENNSYLVANIA.

PLATE-GLASS Sunni/rome can.

Application filed' January 22, 19211-, Serial No. GS'Y,?O6.

-Theinvention relates to cars or trucks for iarrying pla-te ss to be ground and pol ished beneath a series of grinding and polishing` machinesin the so called straight away operation, the cars being arranged in a continuous line or series with their en'ds abutting. In such', an operation, it is importantthat the upper surfaces of the tables and ofthe-glass sheets shall be maintained on the same level, so lthat the runners of the machines shall pass smoothly from one sheet of'glass` to the next Vto avoid breakage, and so thatthe work of surfacing shall be properly distributed over both sheet-s during the `timethefabutting ends of two cars are passing beneath'ithe same runner. y To secure thisresulh'it is'necessary that the track or runway, upon `which the'cars travel shall be ltept perfectly true and level, and that the i' dstancebetween therailsa'nd the tops of the various-cars shall bev .maintained unifornn 'lfhepresent improvement is designed to'provi'de means whereby the tops of each pair of cars at their abutting ends are positivelyk maintained at the same level and flush witheach other throughout the surfacing operation. A. further object -of the invention is aprovision of meansl of the character speciiiedfinv which tlie overlapping` plates employed will cleanA themselves.r One embodiinent of 'the invention is illustrated in the accompanying drawings wherein:

Figure 1 `is a plan view of the ends of the two-cars containing the improvement. Figs. 2, 3 and tareyeitical longitudinal sections on the'l'ines `II-IL HLIII and IVMIV respectively of Fig. 1. And Figs. 5 and 6 are detail,- views vofrone of the castings employed, Fig. 5 a side elevation.

Referring to the drawings, 1 and 2 are body portions` ofa pair of cars embodying the inventiomsuch cars being provided upon their lower sides with Ithe racks 3 and 4 for inovi'ng thecais continuously beneath a series of grinding and polishing machines. At eachrnd of each car are a pair of castings 5, fraud?, 8, vbolted to the body portions-of the carsandcarrying the axles 9 and 1() upon'which arel inountedthe wheels 1l.

ln order to releasably lock the cars ton gether, the mechanism shown in Fig. 2 is preferably employed. such mechanism constituting no part of the present invention and being shown and described in detail in being a plan view and Fig; G'

thecopending application of John lil. Fox, Serial No. 687,705. This locking means includes a hook 12 carried by the car 2 and` hold the two car ends tightly together. A`

rocking arm 15 is also pivotally mounted upon a shaft 1G carried by the end of the car 2, andthis arm is provided with a linl 1T adapted to engage a block 18 on the end of the car 1 so that when the handle 19 carried by the shaft 16 is swung to the riglit, as indicated by the arrow, the car ends are forced apart, provided the hook 13 has previously been raised to disengage the hooi; 19. Any other desired means might be employed for releasably securing the two ends of the car in engagement so that a continuous upper surface is provided upon the series of cars. Y

The castings 5, o', 'T and 8 are'provided with the interlocking means for holding the car ends against relative n'ioveinent, in which the present invention particularly re sides., Theseinterlocking means comprise the projecting plates or members 20, 21, 22

`andv 23 carried respectively by the castings 6, 8, 5 and 7. Their construction will be readily understood by reference to Figs. 3 to G which show the plates or members in section in Figs. 3 and d, and in plan and side elevation in Figs. 5 and 6. As indicated in figures referred to, the casting 8 is provided with the plate 21 which carries a wear plate 24 preferably secured in place by means of countersunk rivets 25. This wear plate is preferably beveled at its end as indicated at 26 so that it will more readily passbeneath its cooperating surface on the car 1. As indicated `in Fig. 3, such cooperating surface is provided by means of the plate 27 riveted to the lower face of the car body 1 at its end and positioned Yto engage the upper surface of the plate 2d. The wear plate27 is also beveled at' its end to correspond to the bevel 26 on the wear plate 24. 1When these parts are in interlocking engagement as illustrated in Fig. 3, the end of the car body can not move upwardly with respect to the car body 1. In order to prevent the Cil Cil

end car body l from moving upwardly with respect to the end of the car body 2, the casting 6 (Fig. l) is provided with a plate or member 20 corresponding to the plate or member 2l, the par-ts being shown in interlocking engagement in Fig. 4e in which 28 is a wear plate secured to the lower side of the car body 2 and cooperating with the wear plate 29 carried by the plate or member 20. In this manner the opposing ends of the car bodies at' one side are securely locked against upward relative movement, and this same result is secured at the other side of the car by means of the plates 22 and 23 which cooperate in the same manner as heretofore described in connection with the plates 2O and 2l.

In order to hold the car ends against any relative lateral or sidewise movement, the sides of the members 2O and 2l and 22 and 23 engage as indicated at 30 and 3l, Fig. l, the opposing surfaces at these points being beveled as indicated. is will be seen by reference to Figs. 3 and 4, a space is provided opposite the ends of the wear plates 27 and 28 as indicated at 32 and 33, so that any dirt which collects on the opposing faces of the wear plates is carried into this recess and does not wedge between the faces of the wear plates as would be the case if no clearance were provided. There is also an open space at the other ends of the wear plates so thatany dirt which is scraped off of the wear plates at this end is free to drop out of the way. The opposing surfaces of the wear plates are so positioned with respect to the tops of the car bodies, that when the parts come together, the upper surfaces of the cars are iiush as indicated in Figs. 8 and 4, and the interlocking parts securely hold these faces flush even though there are slight inequalities in the track and even though one car body may settle slightly as compared to another due to wear or other causes. The advantage of the construction will be readily apparent to those skilled in the art.

IVhat I claim is:

l. In combination with a pair of abutting 'ars having means for locking them together, of means for maintaining the top surfaces of the abutting ends flush, which comprises a plate or member on each car on each side thereof projecting forwardly and engaging a downwardly facing surface on the other car.

2. In combination with a pair of abutting cars having means for locking them together7 of means for maintaining the top surfaces of the abutting ends flush, which comprises a plate or member on each car on each side thereof projecting forwardly and Vengaging a downwardly facing surface on the other car, the said plates or members on one car lying inside the plates ontthe other car, with their outer side surfaces in engagement with the inner side surfaces of the plates or members on the other car to lock the car ends against relative sidewise movement.

3. In combination with a pair of abutting cars having means for locking them together, of means for maintaining the top surfaces of the abutting ends flush, which comprises a plate or member on each car on each side thereof projecting forwardly and engaging a downwardly facing surface on the other car, the said plates having their upper surfaces beveled at their ends.

el. In combination with a pair of abutting cars having means for locking them together, of means for maintaining the top surfaces of the abutting ends flush, which comprises a plate or member on each car on each side thereof projecting forwardly and engaging a downwardly facing surface on the other car, the said plates having their 4upper surfaces beveled at their ends, and said downwardly facing surfaces on the cars also being beveled at their ends.

5. In combination with a pair of abutting cars having means for locking them together,

of means for maintaining the top surfaces of the abutting ends flush, which comprises a plate or member on each car on each side thereof projecting forwardly and engaging a downwardly facing surface On'the other car, the said plates or members on one car lying inside the plates on the other car, with their outer side surfaces in engagement with the inner side surfaces of the plates or menibers on the other car to lock the car ends against relative sidewise movement, and such side surfaces being tapered.

6. In combination with a pair of abutting cars having means for locking them t0- gether, of means for maintaining the top surfaces of the abutting ends flush, which comprises a plate or member on ca ch car on each side thereof projecting forwardly and engaging a downwardly facing surface on the other car, the plates or members and the parts of the car vstructures receiving them being arranged so that there are open spaces opposite the ends of the plates or members when such plates or members are in interlocking position.

In testimony whereof, I have hereunto subscribed my name this 19th day of Jan.,

A. L. HARRINGTON. 

